Improvement in the methods of reducing pressure in steam-boilers



GEORGE SE-WELL. Improvement in the Method of'Reducing Pressure in Steam-Boilers. No. 114,052. Patented April 25, NHL

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Letters Patent No. 114,052, dated April 25,1871; antedated April 22, 1871 IMPROVEMENT IN THE METHODS OF REDUCING PRESSURE IN STEAM-BOILERS.

The Schedule referred to in these Letters Patent end making put of the same.

To all whom it may concern.-

Be it known that I, GEORGE Snwnnn, of Brooklyn, in the county of Kings and State of New York, have made a new and useful Method of Reducing Pressure in Steam-Boilers; and I hereby declare the following to be a full and exact description of the same, reference being had to the annexed drawing which forms a part of this specification, in which Figure l is a plan view.

Figure 2, an elevation, partly in section.

The object of my invention is to prevent the necessity of blowing oif steam to reduce excessive pressure in steam-boilers.

This I accomplish by injecting as often as required ajet of cold water into the steam-space of a boiler, thereby reducing the pressure.

As now constructed the blowing off of steam to reduce pressure in the boiler is a-necessity.

On shipboard the noise from the blowing off of steam is exceedingly annoying, and for the time being seriously interferes with the giving and receiving of orders.

On river and ferry-boats the unearthly noise frightens horses, besides annoying passengers,

By my invention this nuisance is abated and the necessit-y of a safety-valve dispensed with.

My invention is shown in the annexed drawing.

A A is the steam-boiler.

B. steam-pump.

G O, a chest containing a common check-valve and cork, the valve being above the cork to prevent the steam from getting to the pump.

D D, pipe for delivering the water into the steamspace of the boiler, either in the form of spray or in a body.

F F, pipe leading water from pump to pipe D D through valve-chest G 0.

Instead of passing the water through pipe D D into the steam-space it may enter beneath the surface of the water in the boiler, as shown in pipe I I.

The pipes D D and I I mav also be used for sup- Witnesses:

HENRY H. Pnnn'rrss, JOHN A. WALLACE. 

